含液金属蜂窝夹芯梁抗冲击性能研究

高辉遥; 赵振宇; 张磊; 张杜江; 张智扬; 卢天健

doi:10.11883/bzycj-2023-0323

含液金属蜂窝夹芯梁抗冲击性能研究

doi: 10.11883/bzycj-2023-0323

高辉遥^{1, 2,},
赵振宇^{1, 2, ,},
张磊³,
张杜江^{1, 2},
张智扬^{1, 2},
卢天健^{1, 2}

1.
南京航空航天大学航空航天结构力学及控制全国重点实验室，江苏南京 210016
2.
南京航空航天大学多功能轻量化材料与结构工业和信息化部重点实验室，江苏南京 210016
3.
海军研究院，北京 100161

基金项目: 国家自然科学基金（11972185, 12002156）；航空航天结构力学及控制国家重点实验室(南京航空航天大学)自主研究课题资助（MCMS-I-0222K01）；

详细信息

作者简介:
高辉遥（2000－　），女，博士研究生，011950204ghy@nuaa.edu.cn

通讯作者:
赵振宇（1986－　），男，博士，副研究员，zhenyu_zhao@nuaa.edu.cn

中图分类号: O347.1; O383
计量
- 文章访问数: 14
- HTML全文浏览量: 3
- PDF下载量: 9
- 被引次数: 0
出版历程
- 收稿日期: 2023-09-07
- 修回日期: 2024-01-23
- 网络出版日期: 2024-04-15

Research on impact resistance of water-filled metal honeycomb sandwich beams

GAO Huiyao^{1, 2
,},
ZHAO Zhenyu^{1, 2
, ,},
ZHANG Lei³,
ZHANG Dujiang^{1, 2},
ZHANG Zhiyang^{1, 2},
LU Tianjian^{1, 2}

1.
State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China
2.
MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China
3.
Naval Academy, 210016 Beijing, China

摘要

摘要: 提出了含液金属蜂窝夹芯结构的防护方案；设计了含液金属蜂窝夹芯结构的制备方法，以满足结构内液体的密封、液体含量以及填充位置可调控的需求；并通过冲击实验获得了结构在不同冲击速度下的动态响应，同时采用有限元方法进一步讨论了冲击速度、液体含量对结构抗冲击以及冲后振动特性的影响。研究结果表明含液结构的抗冲击表现优于无填充结构，且含液结构抗冲击、冲后振动特性受含液量的影响，当芯体内充满液体时结构可获得最优的抗冲击性能。
- 金属蜂窝夹芯结构 /
- 含液结构 /
- 抗冲击 /
- 冲后振动
Abstract: Based on the background of the further requirements for lightweight, explosion and impact resistance, and vibration reduction and noise reduction in the development of honeycomb structure in engineering science, a liquid metal honeycomb sandwich structure was proposed, and the preparation, impact experiments, and numerical simulation research of the liquid metal honeycomb sandwich structure were carried out. A preparation method for the liquid-filled metallic honeycomb sandwich structure was developed to meet the requirements of effective sealing of the internal liquid, adjustable liquid filling content, and controllable filling position within the structure. The first level light gas gun was used to launch foam bullets to simulate the explosion shock wave load, and the dynamic response of the structure under different impact velocities was obtained. At the same time, the commercial finite element software Abaqus/Explicit was used to carry out numerical simulation of the impact response of foam bullets in the metal honeycomb sandwich structure using the smooth particle hydrodynamics method, and further discussed the impact speed of foam bullets, the liquid content in the cell on the impact resistance and post-impact vibration characteristics of the structure. The results indicate that the liquid-filled structure exhibits superior impact resistance and post-impact vibration performance compared to the unfilled structure. Moreover, with an increase in the liquid content, the displacement response of the liquid-filled structure shows a monotonic decrease, while the damping ratio demonstrates an increasing trend. When the core is fully filled with liquid, the structure achieves optimal impact resistance performance, with a decrease in peak displacement of approximately 13.66% compared to the unfilled structure, and an increase in damping ratio by approximately 1.6 times. The aforementioned research establishes the foundation for the extensive application of liquid-filled metallic honeycomb composite structures in the field of impact protection.
- Metal honeycomb sandwich structure /
- Water-filled structure /
- Impact resistance /
- Vibration after impact

HTML全文

图 1 正方蜂窝夹层结构尺寸

Figure 1. Square metal honeycomb sandwich structure dimensions

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图 2 含液金属蜂窝夹层结构制备流程

Figure 2. Fabrication process of water-filled metal honeycomb sandwich beams

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图 3 液胞填充方式

Figure 3. Liquid cell filling method

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图 4 冲击试验样件示意图

Figure 4. Schematic diagram of impact test specimens

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图 5 无填充结构冲击有限元模型

Figure 5. Impact finite element model for unfilled structures

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图 6 液结构冲击数值模型

Figure 6. Impact simulation model of water-filled structure

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图 7 芯体网格敏感性分析

Figure 7. Sensitivity analysis of core mesh

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图 8 面板网格敏感性分析

Figure 8. Sensitivity analysis of panel mesh

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图 9 含液结构液体网格敏感性分析

Figure 9. Sensitivity analysis of liquid mesh in liquid containing structures

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图 10 固支梁受质量撞击时塑性动力响应

Figure 10. Plastic dynamic response of a solid-supported beam subjected to mass impact

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图 11 结构在约120 m/s冲击速度下的动态响应过程

Figure 11. Dynamic response of unfilled structure at an impact velocity of about 120 m/s

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图 13 试验后的泡沫子弹最终形貌

Figure 13. Final profiles of foam projectiles

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图 12 含液结构在约120 m/s冲击速度下的动态响应过程

Figure 12. Dynamic response of water-filled structure at an impact velocity of about 120 m/s

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图 14 实验样件变形失效情况

Figure 14. Deformation and failure of experimental samples

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图 15 无填充、含液样件系统的各关键能量随时间的演化规律

Figure 15. Evolution law of each key energy with time for unfilled, water-filled sample systems

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图 16 实验与模拟预测的前后面板位移对比

Figure 16. Comparison of before and after panel displacements predicted by experiment and simulation

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图 17 无填充结构在约120 m/s冲击速度下的动态响应过程实验与模拟对比

Figure 17. Experimental and simulation comparison of dynamic response process of unfilled structure at about 120 m/s impact velocity

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图 18 不同冲击速度下无填充结构、含液结构位移响应

Figure 18. Displacement response of unfilled structure and water-filled structure under different impact

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图 19 不同含液量下含液结构位移响应

Figure 19. Displacement response of water-filled structures with different fluid contents

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图 20 不同无量纲含液量下结构振动衰减时程曲线

Figure 20. Damping effect of structure with different dimensionless liquid content

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表 1 正方蜂窝夹层梁参数

Table 1. Square metal honeycomb laminated beam parameters

L/mm	W/mm	H/mm	t_f/mm	H_c/mm	t_c/mm	l_c/mm	L_b/mm	d_b/mm	ρ_s/(kg·m⁻³)	ρ_c/(kg·m⁻³)	h/mm
150	60	19	2	15	0.4	29	35	10	7800	268	0～15
注：L、W、H、t_f、H_c、t_c、l_c、L_b、d_b、ρ_s、ρ_c、h分别为梁半长度、梁宽度、梁总厚度、面板厚度、芯体高度、单胞壁厚、单胞长度、垫块长度、螺栓孔直径、面板密度、含液芯体相对密度、液体高度

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表 2 气凝胶隔热膜材料参数

Table 2. Aerogel insulation film material parameters

化学成分	体积密度/(kg·m⁻³)	纤维熔点/(℃)	推荐使用温度/(℃)	导热系数/(W·m⁻¹·K⁻¹)	厚度/mm
氧化硅	200±20	1400	−50～1200	0.026	1

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表 3 样件质量

Table 3. Sample quality

No.	理想质量/g	制备后样件质量/g	实验前样件质量/g
N-1	753	753	753
N-2	752	752	752
W-1	921	908	904
W-2	921	902	900

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表 4 轻气炮冲击实验记录表

Table 4. Impact experiment record sheet

NO.	m_b/g	m_a/g	m_pb/g	m_pa/g	$ {v}_{0} $/(m·s⁻¹)	I/(kPa·s)	W/mm
N-1	753	753	110.6	109.5	99.7	4.17	17.8
N-2	752	752	107.2	107.0	121.7	4.91	19.24
W-1	904	853	109.6	109.1	100.9	4.19	16.7
W-2	900	836	109.6	108.9	118.4	4.91	18.8

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表 5 不同含液量下含液结构质量、位移数据

Table 5. Mass and displacement data of water-filled structures at different fluid contents

含液比率	结构增重/%	峰值位移减小量/%
0	0	0
0.29	9.36	6.64
0.57	18.60	11.15
0.80	26.11	13.32
1.00	32.63	13.66

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表 6 不同无量纲含液量下结构阻尼比

Table 6. Structural damping ratio under different dimensionless liquid contents

含液比率	结构质量增重/%	阻尼比	阻尼增量/%
0	0	0.027	0
0.29	9.36	0.037	39.6
0.57	18.60	0.053	97.3
0.80	26.11	0.054	103.0
1.00	32.63	0.071	164.4

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